Question
A box containing 80 post-it-pads had a mass of 16.77 kg. A box containing 30 punchers has a mass of 24.77 kg. The mass of each puncher was four times that of each post-it-pad. Find the mass of the empty box in grams.
4 m

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A box containing 80 post-it-pads had a mass of 16.77 kg. A box containing 30 punchers has a mass of 24.77 kg. The mass of each puncher was four times that of each post-it-pad. Find the mass of the empty box in grams.